▎ 摘　　要

NOVELTY - Preparing silicon nanoparticle-plasma fluorinated graphene fiber self-supporting composite material, comprises (i) adding graphene oxide solution into silicon nanoparticles, stirring uniformly, and spinning to obtain silicon nanoparticle-graphene oxide fiber, (ii) filtering through suction and drying the silicon nanoparticle-graphene oxide fiber prepared in step (i) to obtain silicon nanoparticle-graphene oxide fiber self-supporting composite material, and (iii) performing plasma reduction and fluorination reaction of silicon nanoparticle-graphene oxide fiber self-supporting composite material prepared in step (ii) to obtain final product. USE - The silicon nanoparticle-plasma fluorinated graphene fiber self-supporting composite material is useful in preparing cathode materials for lithium-ion batteries (claimed). ADVANTAGE - The silicon nanoparticle-plasma fluorinated graphene fiber self-supporting composite material has excellent conductivity and flexibility; utilizes cathode materials which has high conductivity, fast ion conduction, buffers silicon volume expansion and reduces interface resistance; utilizes lithium-ion batteries which has high specific capacity, high rate performance and long cycle life; and solves the problem of poor cycle performance and rate performance caused by volume expansion and poor conductivity of existing silicon cathode material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for silicon nanoparticle-plasma fluorinated graphene fiber self-supporting composite material obtained by above method.